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ERIC EJ1070484: How Do Openers Contribute to Student Learning? PDF

2012·0.92 MB·English
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International Electronic Journal of Elementary Education, 2012, 5(1), 79-92. How do Openers Contribute to Student ∗∗∗∗ Learning? ∗∗∗∗∗∗∗∗ Amber ZERTUCHE University of California, Berkeley, United States of America Libby GERARD University of California, Berkeley, United States of America Marcia C. LINN University of California, Berkeley, United States of America Received: 20 August 2012 / Revised: 24 October 2012 / Accepted: 24 October 2012 Abstract Openers, or brief activities that initiate a class, routinely take up classroom time each day yet little is known about how to design these activities so they contribute to student learning. This study uses technology-enhanced learning environments to explore new opportunities to transform Openers from potentially busy work to knowledge generating activities. This study compares the impact of teacher-designed Openers, Opener designs based on recent research emphasizing knowledge integration, and no Opener for an 8th grade technology-enhanced inquiry science investigation. Results suggest that students who participate in a researcher-designed Opener are more likely to revisit and refine their work, and to make significant learning gains, than students who do not participate in an Opener. Students make the greatest gains when they revisit key evidence in the technology-enhanced curriculum unit prior to revision. Engaging students in processes that promote knowledge integration during the Opener motivate students to revise their ideas. The results suggest design principles for Openers in technology-enhanced instruction. Keywords: Technology, Science Education, Teaching Practices, Classroom Assessment, Formative Assessment ∗ This article is based on the first author’s unpublished MA thesis entitled “How Teacher-led Openers Contribute to Student Learning in a Web-based Inquiry Science Environment.” This material is based upon work supported, in part, by the National Science Foundation under Grant DRL-0733299 [Logging Opportunities in Online Programs for Science (LOOPS)]. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. ∗∗ Amber Zertuche, Graduate School of Education, Tolman Hall, University of California, Berkeley, U.S.A. Phone: (415) 656-5840. E-mail: [email protected] ISSN:1307-9298 Copyright © IEJEE www.iejee.com International Electronic Journal of Elementary Education Vol 5, Issue 1, 79-92, 2012 Introduction Openers, or brief activities that initiate a class, routinely take up classroom time each day yet little is known about how to design these activities so they contribute to student learning. Teachers often give mini-lectures to remind students of what they studied in the previous class. Or, teachers may assign a short writing assignment. Technology-enhanced learning environments provide teachers with new tools to transform Openers from busy work to valuable learning activities. Openers can engage students in knowledge integration activities such as making predictions, critiquing a claim, assessing peer essays, or reflecting on progress—all activities that have been shown to improve student learning (Chiu and Linn, 2011; Linn and Eylon, 2011; White and Frederiksen, 1998). This study compares the impact of teacher- and researcher-designed Openers to no Opener in an 8th grade technology- enhanced inquiry science investigation. Questions include: How effective are Openers? How does the design of the Opener contribute to student learning? And, what are effective post- Opener revision processes? Teacher-led Openers can play an essential role in the success of technology-enhanced inquiry science instruction. Several studies show that the quality of teacher implementation of technology-enhanced instruction predicts the impact of the technology on learning (Tamin, Bernard, Borokhovski, Abrami, and Schmid, 2011). In a second-order meta-analysis conducted on technology-enhanced instruction over the past 40 years, the authors conclude that the teachers’ ability to monitor student understanding and help students sort out their ideas is essential to successful technology implementation (Williams, Linn, M, Ammon, and Gearhart, 2004). This meta-analysis found that as teachers asked more knowledge oriented questions during the course of a technology-enhanced science investigation as opposed to procedural questions, learning gains improved significantly. Further, to realize the potential of technology-enhanced instruction, teachers need to help students critically analyze visualizations relative to the conceptual learning goal as students often overestimate their understanding of dynamic computer visualizations, particularly in Chemistry (Chiu and Linn, 2012). Technology-enhanced learning environments provide teachers with unique tools to structure effective Openers. The computer stores and organizes a record of each student’s work including their multiple revisions, and provides ways to make examples of the student’s work public to the whole class. This means teachers can purposefully select examples of the student’s work for class discussion. Effective selection of examples could prompt students (and their teachers) to monitor understanding, sort out ideas about difficult concepts, and revisit and refine their reasoning (Izsak, 2012; Linn and Eylon, 2011). Using Student Work to Design Openers Student work is collected in technology enhanced learning environments and can be used to design openers. Black and Wiliam (1998) reviewed hundreds of studies and came to the conclusion that the use of student work for formative assessment and refinement of instruction is one of the most powerful ways to increase students’ learning gains, particularly among low achieving students. Similarly, Shute (2008) reviewed work on formative feedback, defined as information communicated to the learner that is intended to modify his or her thinking or behavior to improve learning, and found that effective feedback is non- evaluative, supportive, timely, and specific. Gerard, Spitulnik, and Linn (2011) showed that when teachers use student work to refine their teaching, students’ learning benefits. These studies distinguish between activities providing verification, where students choose whether an answer is correct or not, and elaboration, where teachers provide cues to guide learners toward a correct answer. Gerard et al found that use of student work to design instruction is 80 How do Openers Contribute to Student Learning? / Zertuche, Gerard & Linn most effective when the resulting instruction provides advice on what to do to improve performance, rather than on comparisons to other students or on accuracy of responses. One example of a successful use of student work is for self- and peer-assessment. Research suggests that students can benefit from self and peer assessment activities when they recognize the desired learning goal, have adequate evidence to determine where the work stands relative to the learning goal, and have an understanding of a way to close the gap between the two (Black and Wiliam, 1998). Under these conditions, students can distinguish between their own ideas and the goal of instruction and strengthen their understanding. Taken together, these results suggest that effective Openers should elicit student work and provide hints or guidance. What are the challenges of formative assessment? Black and Wiliam’s review of formative assessment studies point out that, although formative assessment has proven to be useful to student learning, there are concerns about how to enact successful formative assessment (1998). One issue is that in order to implement formative assessment in a useful way, teachers must have easy access to evidence of students’ ideas and efficient routines to elicit students’ ideas during class so they can help students to distinguish among these ideas. This calls for assessment or discussion questions that prompt students to make their reasoning explicit and provide multiple entry points for students with various levels of understanding. Students must also be actively involved in the feedback they are receiving in order for it to have an effect on their learning. This requires significant changes in a traditional secondary science classroom. Traditional science classroom routines often center on teacher-directed lectures and demonstrations, leaving little space for students to reflect on their understanding and sort out the variety of ideas they hold about the topic gathered from everyday experiences, peers, and school curricula. Ruiz-Primo and Furtak (2007), for instance found that teachers’ formative assessment routines focused on procedural elements of inquiry learning, learning such as checking the students’ knowledge of the correct procedure and asking them to apply a procedure to a new situation, rather than knowledge generation. How to Design an Effective Opener in Chemistry? This study investigates the design of knowledge integration Openers. Typical classroom Openers usually reflect the absorption model of instruction and use the question, response, evaluation (QRE) approach. In this model, the teacher asks a question with one answer in mind and prompts until a student gives the answer or fills in the response if none is elicited. This theory of learning assumes that the task of the learner is to acquire the body of connections that an expert analysis of the subject matter reveals (Greeno, Collins, and Resnick, 1996). In contrast, the knowledge integration perspective on learning resonates with the Black and Wiliam’s findings (2011) and guides the design of the Openers, curriculum and assessments in this study. The knowledge integration perspective draws on findings from learning sciences research. Specifically, learners hold multiple conflicting ideas about scientific phenomenon as has been documented in numerous studies of student intuitions about science topics (diSessa, 2000). In addition, learners, often in collaboration with others, can deliberately sort out, link, and critique their ideas when making sense of new scientific phenomena and benefit from encouragement to engage in this process (Linn, Lee, Tinker, Husic, and Chiu, 2006; Linn and Hsi, 2000; Novak and Gowin, 1984; Slotta, Chi, and Joram, 1995). This means that providing opportunities for students to compare alternative ideas to their own, develop criteria for sorting-out and distinguishing among ideas, and reflect on their ideas can help them form coherent hypotheses or explanations. 81 International Electronic Journal of Elementary Education Vol 5, Issue 1, 79-92, 2012 The knowledge integration Openers in this study were designed to help students make connections among their ideas about chemical reactions. In chemistry, one of the most difficult things for students to learn is how chemicals react. Students often have difficulties translating between symbolic representations, molecular representations, and observable phenomena (Ardac and Akaygun, 2004). Particularly, students struggle to make sense of chemical phenomena at the molecular level (Johnstone, 1993; Krajcik, 1991). For example, many students think of chemical reactions as an instantaneous process without bond breaking and formation, while others think all the molecules break into atoms. In addition, prior studies demonstrate that students often isolate molecular visualizations rather than linking them to existing knowledge or everyday experiences and have difficulty interpreting stand-alone dynamic visualizations (Tversky, Morrison, and Betrancourt, 2002; Zhang and Linn, 2011). This study addresses this gap in learning chemical reactions with Openers that ask students to reflect upon and critique peers’ visual molecular representations of hydrogen and oxygen combustion. Methods Research Design This study investigates how a researcher-designed Opener, teacher-designed Opener, and a control condition (no Opener) contribute to students’ revision of work and understanding of chemical reactions. Three central questions guide this research: 1. Do Openers contribute to student understanding of chemical reactions? 2. How does the Opener design influence students’ learning outcomes? 3. What are effective post-Opener revision processes? Curriculum and Assessments The Web-based Inquiry Science Environment (WISE) is an open-source on-line learning environment that includes multiple standards-aligned science inquiry curriculum units. To engage students in knowledge integration processes, WISE projects guide students in collaborative activities with visualizations of scientific phenomena that are difficult to observe, such as molecular views of chemical reactions (Figure 1). Students investigate hypotheses, design solutions to problems, critique scientific claims, and build scientific models, scaffolded by guidance based on knowledge integration principles. Students in this study worked on the WISE Hydrogen Fuel Cell Car unit. This is a one week unit designed to teach students about chemical reactions, alternative fuels, and energy (http://wise.berkeley.edu/webapp/vle/preview.html?projectId=911). The project begins by asking students if they would rather buy a hydrogen or gasoline powered car. It also elicits their ideas about energy and adds ideas about conservation of energy. Then, gasoline combustion in cars is explored including the relationship between carbon dioxide, a product of gasoline combustion, and temperature changes over the last 200 years. Students then create their own energy story about cars. This story includes where the energy came from to power the car and any chemical reactions that are involved in their story. Hydrogen combustion is then explored using a dynamic visualization of hydrogen combustion (Figure 1). Then students are taught about the difference between exothermic and endothermic reactions and finally, students investigate a visualization of a hydrogen fuel cell to learn how this technology works. Students are then asked which kind of technology they would prefer when buying a car. 82 How do Openers Contribute to Student Learning? / Zertuche, Gerard & Linn Assessments are embedded throughout the WISE projects to help students and teachers monitor student understanding and progress as students interact with visualizations (Figure 2). The embedded assessments ask students to make predictions about the visualizations, sort out evidence, and link ideas together to explain their thinking. Students can also get hints to help them complete the tasks. Figure 1. One of the visualizations in WISE’s Hydrogen Fuel Cell Cars project models the hydrogen combustion reaction. Students can run, stop, reset, and ‘spark’ to start the reaction and explore the nature of chemical reactions. In the Hydrogen Fuel Cell Cars unit, an embedded assessment immediately follows the visualization of hydrogen combustion asking students to draw four frames of hydrogen combustion (Figure 2). This is meant to help students make sense of the dynamic visualization, recognizing features such as conservation of mass, bonds breaking, and the progression of the reaction. The Openers in this study focused on student work from this embedded assessment since in previous years this particular task was particularly challenging to students and yet still, understanding how to draw basic hydrogen combustion is critical to student understanding of chemical reactions. Figure 2. The WISE project screen has an inquiry map on the left, a navigation bar on top, and an embedded assessment in the center of the screen. 83 International Electronic Journal of Elementary Education Vol 5, Issue 1, 79-92, 2012 Teacher Assessment Tools WISE provides teachers convenient access to a record of student work as students progress through a WISE unit (Figure 3). The WISE grading tools allow teachers to view embedded assessment data by step, and the flag tool allows teachers to select key student work examples for display. Students can view flagged work at any time by clicking on a tab at the top of their WISE screen. This allows students to actively see their peers' work and be a part of the feedback process to improve their understanding. Students can revise their work based on teachers’ and peers’ comments. All revisions are logged in the grading tool so the teacher can measure the impact of their Opener, or comments, by viewing the change in students’ ideas from their original to revised work. Revision Time Stamp Flag Work Number Checkbox Figure 3. WISE assessment tool with revision number on the left, including time stamp, and checkbox to flag work on the right. Study Participants Two 8th grade teachers and their 236 students from 1 public school participated in this study. The school has medium diversity (22% receiving free lunch, 5% ELL, and 27% non- white). Both teachers had over five years experience teaching with WISE and frequently used Openers in their regular and WISE instruction. Students were randomly assigned by class period to one of the three conditions. There were 78 students in the teacher-designed Opener, 128 students in the researcher-designed Opener, and 30 students in the control group condition. The uneven sample sizes were due to the uneven number of class periods that each teacher taught Physical Science that year. Opener Design The researcher-designed Opener engaged students in Knowledge Integration processes, as shown in Table 1. Activities included a small group discussion, voting, a whole group discussion, and then a closing summary by the teacher. The examples were selected to illustrate the range of conceptual errors in student representations of the chemical reaction. These related to (a) conservation of mass, (b) breaking of bonds, and (c) progression of the reaction. 84 How do Openers Contribute to Student Learning? / Zertuche, Gerard & Linn The teacher-designed Opener alternatively focused on picking out what is good and bad about the student work and a lecture to try to re-teach chemical reactions from a different angle. Examples of student work were selected to illustrate responses that could be described as, “the good, the bad and the ugly”. Table 1. Description of Openers used in Teacher 1 and Teacher 2’s classroom using the Knowledge Integration Framework. Teacher-Designed Researcher-Designed Teacher 1 Elicit Ideas: Question on the board about Students open WISE project to view how a balanced equation obeys the law of four examples of student work in conservation of mass. WISE project by clicking on the Students fill out a chart on how much mass “Flagged Work” button. Each (amu) exists before and after reaction. example has one unique link Add Ideas: Students use physical model of missing (Figure 4) molecules to break bonds and put back Elicit Ideas: Teacher asks students together. to write down which drawing best Teacher shows multiple types of reactions. represents the visualization of Distinguish Ideas: Teacher shows four hydrogen combustion and use examples of student work and asks evidence to explain why. students if the example is good or bad. Students vote and teacher tallies Integrate Ideas: ____ votes. (~12 min) Add Ideas: Students discuss their Teacher 2 Elicit Ideas: ____ choices in groups of 4 and revisit Add Ideas: Used embedded assessment evidence in the visualization. problem and a tree to house analogy to Distinguish Ideas: Students take students through the chemical reconsider their initial choice in reaction steps. light of their discussion with peers Tree must break into parts, then and revisit the evidence. Make a recombine parts and build a house. new vote. Uses physical models of hydrogen and Integrate Ideas: Teacher tallies oxygen molecules to show students new votes and asks students to progression necessary to make water. justify their choice. Teacher Distinguish Ideas: ____ synthesizes criteria used to evaluate Integrate Ideas: ____ drawings, and instructs students to (~8 min) revise their own drawing. (~20 minutes) Link missing: conservation of mass Link missing: bonds breaking Figure 4. Examples of student work shown during the researcher-designed Opener. 85 International Electronic Journal of Elementary Education Vol 5, Issue 1, 79-92, 2012 Data Collection and Analysis Data sources include: the original student work on the embedded assessment, the revised student work on the embedded assessment after the Opener, WISE log files illustrating student navigation through WISE immediately after the Opener, pre and post tests administered immediately before and a 1-14 days after the WISE project, classroom video of teacher implementation of the researcher-designed and teacher-designed Openers, and teacher interviews. Knowledge integration rubrics were used to score the embedded and pre/post assessments. The embedded assessment rubric is shown in Table 2. Table 2. KI rubric for embedded assessment where students make step-by-step drawings of hydrogen combusting with oxygen KI Level Score Characteristics Example Invalid 1 Blank or I don’t know No links 2 No normative ideas conveyed but work has been done Simple, 1 3 Represents conservation of mass link OR bonds breaking OR progression* Advanced, 4 Conservation of mass AND 2 links progression* OR Conservation of mass AND bonds breaking OR Progression* AND bonds breaking Complex, 5 Conservation of mass AND bonds 3 links breaking AND progression* of reaction * Progression must be apparent on all 3 transitions Pre and post questions were also scored using a KI rubric. The main ideas that students should understand in the pre- and post- test are that there is a reaction process that occurs and that H and Cl should start breaking bonds before forming new bonds. 2 2 Results We examine the effects of Openers on student learning outcomes, and then explicate the contributing factors including Opener design and students’ learning practices. We focus on embedded assessments and pretest-posttest performance. We consider the actual implementation of the conditions and student performance as reflected in the log files. 86 How do Openers Contribute to Student Learning? / Zertuche, Gerard & Linn Embedded assessments To investigate the impact of the Opener versus no Opener on student understanding we compared students’ original (before Opener) and revised (after Opener) responses to the embedded assessments. Responses were scored using the knowledge integration rubric. Both teacher and researcher-designed Openers (n=105 pairs) were compared to the no Opener condition (n=30 pairs). Pairs who did not complete the embedded assessment before the Opener were excluded from the analysis (n=26 pairs). Although the aim was to facilitate the Opener after 75% of students completed the embedded assessment, this number was based on an automated progress screen that only monitored whether or not students submitted work at least once for this assessment. Once the researchers looked at the student’s work, it was obvious that, although work was submitted, many students did not finish their drawings and therefore these were not included in the data analysis. Responses were scored using the KI rubric. Time stamps from the WISE log files were used to identify students’ final work immediately before the Opener and their revised work on the day of the Opener. The analysis suggests that students who had an Opener, either teacher- or researcher- designed, made substantially greater learning gains than students who did not have an Opener. As shown in Table 4, students who had an Opener (M = .29, SD = .78) doubled the mean gain score of those students who did not have an Opener (M = .13, SD = .51) on the embedded assessment. There was no significant difference between conditions in students’ pre-Opener scores. Students who had an Opener (M = .68, SD = .48) were significantly more likely to revisit and revise their work than students who did not have an Opener (M = .33, SD = .48), t(131) = -3.5, p < 0.001. In the Opener condition, revision was twice as likely as in the no Opener condition. Table 3. Pre to Post Gain Scores with and without Opener. N Pairs Who Revised Mean Gain (SD) Rate of Revision (N Pairs who Their Work Revised/Total Pairs) Opener 105 .29(.78) 66% No 30 .13(.51) 33% Opener The Openers were particularly effective for students who demonstrated at least a basic understanding on the embedded assessment prior to the Opener (Table 7). Having an Opener had a significant effect on students who began with at least a partial understanding, or level 3 on the knowledge integration scoring rubric (M = .71, SD = .69), t(26) = -2.07, p = .05. Students who began with partial understanding developed their ideas into a basic understanding (level 4) after the Opener. In contrast, students who began with partial understanding and had no Opener continued to demonstrate only partial understanding after revising their work (M = .18, SD = .60). The large effect of the Opener on level 3 students is partially due to the examples of student work selected for critique in the researcher and teacher-designed Openers. The selected examples that were shown during the Opener illustrated characteristics of level 3 understanding, making them most accessible to this population of students. Since student work was chosen this way, this Opener was unwittingly designed to increase the learning gains of students with an already basic understanding of chemical reactions. Students with non-normative ideas, or level 2 understanding, made modest gains with or without an Opener, as shown in Figure 5. Level 2 students may need examples aligned with their own ideas to improve to partial or high level understanding. For instance, showing 87 International Electronic Journal of Elementary Education Vol 5, Issue 1, 79-92, 2012 student work with no conservation of mass or bond breaking would lead to a discussion where students point out that both are missing from the drawing. Alternatively, showing a common level 2 student work may show this population of students that their attempt is acknowledged and that they have direct feedback for improving their drawing. Pre Opener: No Links Present Post Opener: No Links Present Figure 5. Examples of students’ work with a level 2 understanding before and after an Opener. Table 6. Pre to Post Opener Gain Scores Distributed by Pre-Opener Scores Pre- N Pairs Who Mean Gain N Pairs who Revised Mean Gain Without Opener Revised Their With Opener (SD) Score Work Opener(SD) 2 10 .4(.70) 5 .4(.89) 3 17 .71(.69) 11 .18(.60)* 4 42 .21(.42) 10 0(0) *p=.05 Pre-test to Post-test effects. The pre- and post- tests were administered before students began the week long project and after they finished the project. In spite of the gains found for the specific item addressed by the Opener, there was no difference on the pre/post tests between students who had an Opener (M = 1.74, SD = 2.50) and those who did not (M = 1.55, SD = 2.16), t(255) = -.511, p = .61. This is not surprising since the Opener treatment was only 10-20 minutes out of the 5-7 hour long project. Perhaps several Openers over the project length would have been able to affect the pre test to post test results. Also, one of the teachers in the study did not give the post test until 2 weeks after the project was completed. Although the schedule was controlled, the teacher ultimately has the authority on when to give the post test. This delay may have masked any immediate effects of the Opener on the post test. Because of these time related anomalies, student performance on the embedded assessment is a better representation of the immediate effects of the Openers. How does the Opener design influence students’ learning outcomes? The Opener designs, described in Table 2, differed primarily in their support for distinguishing and integrating ideas. In both Openers, students were presented with evidence regarding a chemical reaction and prompted to think about conceptual features of a chemical reaction. The researcher-designed Opener had additional components to support integration of ideas. After considering the new evidence, students were guided to reconsider 88

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